Battery pack



FIG. 1 is a front perspective view of a battery pack showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a right view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the drawings represent unclaimed portions of the battery pack and form no part of the claimed design. 

CLAIM The ornamental design for a battery pack, as shown and described. 